(2) An acorn falls from a branch located 9.8 meters above the ground. Which one of the following is NOT TRUEafter one second has passed? A. The acorn will have a downward velocity of 9.8 m/s B. The acorn will have hit the ground C. The acorn will have fallen half way to the ground D. Even though the acorn's velocity is increasing, its acceleration is constant E. The acorn's velocity and acceleration are in the same direction -(3) A 23 g pebble is thrown with an initial horizontal velocity of 5 m/s and an initial vertical velocity of 3 m/s. Which of the following statements are TRUEwhile the pebble is moving through the air? (You can select more than one.) A. The pebble will never hit the ground B. The pebble will have zero vertical velocity at some point C. The pebble will not experience the pull of gravity D. The pebble's horizontal velocity will change E. The pebble will be weightless -(4)A 4.9 kg object is dropped on the earth from a height of 2 m, and it is found that it takes 0.64 seconds to hit the ground. A second object is dropped from the same height on the moon (where the acceleration of gravity is 1.62 m/s?). What can we say about the mass of the second object if we want it to fall to the surface of the moon in the same 0.64 seconds the object fell on earth? A. The mass of the object on the moon must be greater than the mass of the object on earth to account for the weaker gravity on the moon B. The mass of the object on the moon must be the same as the mass of the object on the earth since the acceleration of gravity doesn't affect how fast an object will fall C. The mass of the two objects will be the same since the mass doesn't affect how fast either obiect will fall D. The mass of the object on the moon must be less than the mass of the object on earth because lighter gravity requires less mass E. The objects will never fall at the same rate because the acceleration of gravity on the moon and the earth are different, and the mass of the object is irrelevant